Pump-rod coupling.



No. 737,191. PATENTED AUG. 25, 1903.-

s. M. ABBGTT.

yPUMP ROD COUPLING. APPLICATION FILED JUNE 5, 1903l @ATTORNEYS UNITED A' STATES Patented August 25, 19o3.`

. PATENT OEEICE. `v

SCOTT M. ABBOTT, OF WATERTOWN, MINNESOTA.

SPECIFICATION forming part of Letters Patent No. 737,191, dated August 25, 1903.

Application led .Tune 5, 1903. Serial No. 160,164. (No model.)

To @ZZ whom, t may concern: Be it knownthat I, SCOTT M. ABBoTT,a citizen of the United States, residing at Vatertown, in the county of Carver, State of Minnesota, have invented certain new and ,useful Improvements in Pump-Rod Couplings, of which the following is a specilication, reference being had therein to the accompanying drawings, in which- Figure 1 is aside elevation; Fig. 2, a horizontal sectional view taken on the line 2 2 of Fig. 1 through the coupling means; Fig. 3, a vertical sectional'view taken on the line 3 3 of Fig. 2; Fig. 4., a vertical sectional vview taken on the line l 4 of Fig. 2; Fig. 5, a horizontal sectional view taken onvthe line 5 5 of Fig. 1; Fig. G, a similar view taken on the lineG 6 of Fig. 1, and Fig; 7 a similar view showing a slightly-varied form of the connection between the pump-handle and handle-coupling rod.

The main object of this invention is t0 provide a coupling by which the piston-rod of a pump may be alternately connected to the pumping-rod of a windmill and to the handle of the pump by merely shifting the position of a coupling-lever.

A further object of the invention is to connect rigidly to the pump piston-rod a coupling-head and to mount on this head a simple mechanism which may be operated to alternatelyconnect the piston-rod with the Windmill pumping-rod and with the pumphandle. i

A further object of the invention is to interpose in the windmill pump-rod a reliefspring to take up the sudden jars and strains occasioned by quickly connecting the pumprod to the piston-rod.

Other and equally. important objects and advantages will appear hereinafter.

Referring to the various parts by numerals, 1 designates the pump, 2 the bifurcated standard, which carries at its upper end the guide 3 for the pump piston-rodel. To this pistonrod, above the bifurcated standard and the guide 3,' is rigidly bolted the coupling-head 5. This head is formed with the vertical groove 6, in which lies the-piston-rod, and through the piston-rod and the coupling-head is passed the bolt 7, the piston-rod being clamped between the cap-like washer S and the couplinghandle-coupling rod 13.

-This sleeve 10 is preferably formed integral f with the coupling-head; but of course it may A be secured to said head in any suitable way. Near its left-hand end the headis formed with the vertical passage 12 tof receivethe Extending outward horizontallyfrom each end of thecouplinghead is a small-tube 14, each of which receives and guides a coupling-pin 15, the outer end of these pins being turned down and each pivotally connected to the adjacent end of the shifting-rod 16. This shifting-rod isheld in place at the side of the coupling head by means of a retaining-plate 17, whose arms eX- tend downward and outward in opposite directions, their lower ends being bent inward to form the supports 18 for the shifting-bar 16, the inner edges of said supportsiitting closely Vagainst the under side of the coupling-head,

as clearly shown in Figs. 3 and 4. On the side' of the coupling-head, at each end thereof just above the shifting-rod 16, are formed outward-extending guide-lu gs 5, which serve to hold the shifting-rod down on the supports 18. Surrounding the bolt 7, between the retaining-plate or washer 17 and the face of the coupling-head, is a sleeve 19, on which is journaled the coupling-lever 20, the washer 17 serving to retain the lever in position. The lower end of this lever is formed with the gearteeth 21, which intermesh with the rack 22, formed on the upper edge of the shifting-bar ward the left side, as shown in Figs. 1 and 2,

the shifting-bar 16 will be moved toward the l right and onecoupling-pin 15 will be moved inward to engage a perforation in the handlecoupling rod 13, and the other coupling-pin 15 will be disengaged from the pumping-rodV 11 of the windmill. By shifting the couplinglever tothe' right the movements of these parts willlbe reversed and the windmillpumpingrod 11 will be engaged by one of the couplingpins and the coupling-rod 13 will be'released.

The pump-handle 23 is connected to the standard by means of the link 24., and the upper end of the handle is bifurcated, as at 25, and straddles the piston-rod of the pump.

IOO

Connected to the bifurcated upper end of the handle is the lower end of the handle-coupling rod I3. The lower end of the handlecoupling rod is enlarged and extends inward toward the pump-rod, this inward-extending part forming a support for a wearing-slice 26, said shoe being provided with flanges at its upper and lower edges to engage the enlargement of the handle-coupling rod. This wearin g-shoe rests against the piston-rod, so that when the piston-rod is connected to the windmill pump-rod the wear will be on the shoe instead of on the coupling-rod. This shoe or its equivalent is very desirable even when the handle-coupling rod is connected to the pump piston-rod in order that there shall be no bending or springing of the cou pling-rod d uring the movement of the handle and to make the connection between the pump-handle and the piston-rod as nearly rigid as possible. To each side of the handle-coupling rod, at its lower end, is bolted a forward-cxtendii1g jaw 27, which is provided on its inner face with an inward-extending cylindric lug 2S, said lugs fitting in corresponding perforations in the arms of the infurcated end of the handle 25. The ends of these jaws are connected together by a transverse bar 29 above the handle 25 and opposite the wearing-shoe, said bar lying close to the edge of the piston-.rod 4. The object of this bar is to prevent the handle-coupling rod being moved forward when the pump-handle is lifted, said bar contacting with the edge of the piston-rod and preventing any forward movement of the handle-coupling rod. One jaw of the coupling-rod may be formed integral with the main part of said rod and the otherjaw bolted thereto if considered desirable.

In Fig. 7 the lower end ofthe handle-coupling rod is secured between the outer ends of two jaws 30, the inner ends of which are pivotally connected to the upper bifurcated end of the handle. Mounted in these jaws and bearing on the piston-rod is a wearing-wheel 3l. This wheel serves the same purpose as the wearing-shoe shown in Figs. l and 6 and may or may not be used, as desired.

Through the upper end of the handle-coupling rod is passed a short pin'32, which will prevent said rod passing downward entirely through the coupling-head.

The windmill pump-rod is formed in two sections 11 and 1lb, the lower one of which, 1l, fits and slides in the sleeve l0 of the coupling-head. The upper end of this section Il is bent horizontally to form the lip 3S, and said horizontal portion is apertured for the passage ofthe vertical bolt 3i, which extends upward from said horizontalportion. The lower end of the portion lll is extended horizontally to formthe lip 35, which lies over the lip 33, and is also apertured for the passage of the bolt 84. Surrounding this bolt, its lower end resting on the lip 35, is a strong coil relief-spring 236, and on the upper end olf this bolt is screwed a nut 37, which retains a plate 3S in position and is adapted to compress the spring 3G. The operation of this portion of the invention is obvious. lhen the coupling-pins l5 are shifted by means oi' the lever 20 to quickly connect the windmill pump-rod to the piston-rod 4 during the reciprocation of the windmill pump-rod, the sudden jar will be taken up by the relief-spring and the pump will be relieved thereby of the sudden strain. By adjusting the nut 37 the tension of the spring 36 maybe so regulated that the lips and 35 will remain in contact with each other during the ordinary operation ofthe pump by the windmill, the spring yielding only when there is a sudden and unusual strain exerted by the windmill pump-rod. This relief-spring is very necessary when itis desired to connectl the reciprocating windmill-rod with the coupling head. lVithout it the sudden jar of quickly shifting the coupling-pin 1.5 into cngagement with the part llL is apt to d isarrange the apparatus and to bring an unnecessary strain on it.

It will thus be seen that I provide a coupling means which is simple in construction and which by the mere shifting of a lever will disconnect the piston-rod of the pump from the pump-handle and connect it to the pumping-rod of the windmill during the reciprocation of the windmill pumping-rod without causing any undue sudden j ar or strain on the coupling means. The coupling mechanism is simple, is not liable to get out of order, and the wear thereon will be exceedingly small, so that the mechanism will last for a long time and require little or no repairs.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a coupling for pump-rods, the combination of a coupling-head, means for securing said head to the piston-rod of a pump, a passage through said head for the windmill pumprod, a secon d passage therethrough for the han (lle-coupling rod, a pair of pins carried by thc coupling-head and adapted to pass across the passages therein, ashifting-bar connected to said pins, and means for reciprocating said shiftingbar whereby the coupling-head may be connected and disconnected from th e windmill pumping-rod or the handle-coupling rod.

2. In a coupling for pump-rods, the combination of a coupling-head, means for securing said head to the piston-rod oi' a pump, a vertical passage through said head for the windmill-rod, a second passage through said head for the handle-coupling rod, a pin adapted to extend across each of said passages, ashifting-rod connected to the outer ends of said pins, a coupling-lever pivoted on the couplinghead and adapted to reciprocate the shiftingrod.

3. In a coupling for pump-rods, the combination of a coupling-head, means for rigidly securing said head to the piston-rod of a pump, a vertical passage through said head near one of its ends to receive the windmill pumpinglCO IIO

rod, a similar passage near the other end of said head to receive a handlecoupling rod, a pin carried by the head at each of its ends and adapted to extend inward across the adjacent passage through said head, a shifting-bar, the outer ends of the pins being connected to said bar, an operating-lever provided with teeth on its lower end and adapted to engage a rack formed on the upper edge of the shifting-bar, and a retaining and supporting plate carried by the head and adapted to form a support for the shifting-bar.

4. In a coupling for pump-rods, the combination of a coupling-head, means for securing said head to the piston-rod of a pump, apassage .therethrough to receive the ,windmillrod, a second passage through said head, a handle-coupling rod extending through said passage, a coupling-pin carried by said head and adapted to extend inward and to enter a perforation in the handle-coupling rod, a second pin adapted to extend inward through a perforation in thewindmill-rod, a shifting-bar connected at its ends to the outer ends of the sliding pins, and means for reciprocating said bar in either direction, and means for pivotally connecting the 'lower end of the handlecoupling rod to the upper end of the pumphandle. d

5. In a coupling for pump-rods, the combination of a coupling-head, means for securing said head to the piston-rod of a pump, a passage therethrough to receive the windmill coupling-rod, a second passage through said head, a handlecoupling rod extending through said second passage, a coupling-pin carried by'said head and adapted to extend inward and to enter the perforation in the handle-coupling rod, a second pin adapted to extend inward through a perforation in the windmill-rod, a shifting-bar connected at its ends to the outer ends of the coupling-pins, means for reciprocating said bar in either direction, means for pivotally connecting the lower end of the handle-coupling rod to the pump-handle and a pair of guides carried by the handle-coupling rod and adapted to engage the front and Vrear edges of the pump piston-rod to prevent any material forward or rearward movement of theY handle-coupling rod during the movement of the pump-handle.'

6. In a coupling for pump-rods the combination, of a coupling-head, means for securing said head to the piston-rod of a pump, a

ypassage through said head for the windmill pump-rod, a second passage therethrough for the handle-coupling rod, a pair of pins carried by the coupling-head and adapted to pass across the passages therein, a shifting-bar connected to said pins, means for reciprocating said shifting-bar whereby the couplinghead may be connected and disconnected from the windmill pumping-rod or the handlecoupling rod, a two-part windmill pumpingrod, -one of said parts extending through the 65.

coupling-head, th e other part being connected to the first part above the coupling-head, and a relief spring interposed between the two parts of the windmill pump-rod, whereby the coupling-head may be connected to the wind- 7c mill pump-rod during the reciprooation of said rod, and the relief -spring will take lup the sudden strain caused thereby.

7. In a coupling for pump-rods the combination, of a coupling-head, means for securing said head to a pump piston-rod, a passage therethrough for the windmill pumping-rod,

a second passage therethrough for a handle'v coupling rod, a coupling-lever pivoted on the coupling-head, means operated by said lever 8o for connecting the coupling-head to the windmill pumping-rod, and disconnecting it from the handle-coupling rod or vice versa, a handle-coupling rod, a wearing-shoe carried by on the forward edge of the pump piston-rod, a pair of jaws connected to said handle-coupling rod at its lower end and extending rear- Vward therefrom on each side of the pistonsaid rodV at its lower end and adaptedto bear 8 5 rod, a wearing-pin connecting the rear ends 9o of said jaws and lying close to the forward edge of the piston-rod, and a pump-handle pivotally connected to said jaws.

8. In a coupling for pump-rods, the combination of a coupling-head, means for securing said head to the piston-rod of a pump, .a vertical passage through said head for the windmill pump-rod, a second passage through said head for the handle-coupling rod, a pin adapted to extend across each of said passages, a shifting-rod connected to the outer ends of said pins, a coupling-lever pivoted on the coupling-head and adapted to reciprocate the shifting-rod, a two-part windmill pumping-rod, one of said parts extending through x05 the coupling-head the other part being connected to the first part above the coupling 

